The legal entity is the market supervisory authority for the city of peaches of the city of water control, represented by the legal person, and operates in the scope of the new material technology promotion service; sales of bridges, bridge stretchers, pre-burials, nihilators, inflating membranes, water stopping bands, leaks, earthwork bars, earthworks, seals, acoustic tubes, waterproofing materials, beam steel plates, guard frames, protection nets, anchorages; installation and maintenance of bridges, bridge stretchings, and guard posts; and construction of waterproof tunnels on the bridge. (projects subject to legal approval may not operate without the approval of the relevant department)